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    <title>ModelEntity对象 | Mars3D | 三维地图 | 火星科技 | 合肥火星科技有限公司</title>

    <script
      type="text/javascript"
      src="../lib/include-lib.js"
      libpath="../lib/"
      include="jquery,font-awesome,bootstrap,bootstrap-checkbox,layer,haoutil,turf,mars3d"
    ></script>

    <link href="css/style.css" rel="stylesheet" />
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  <body class="dark">
    <!--加载前进行操作提示，优化用户体验-->
    <div id="mask" class="signmask" onclick="removeMask()"></div>

    <div id="mars3dContainer" class="mars3d-container"></div>

    <div class="infoview">
      <div>
        图层状态：
        <div class="checkbox checkbox-primary checkbox-inline">
          <input id="chkShow" class="styled" type="checkbox" checked />
          <label for="chkShow"> 显示隐藏 </label>
        </div>
        <div class="checkbox checkbox-primary checkbox-inline">
          <input id="chkPopup" class="styled" type="checkbox" checked />
          <label for="chkPopup"> Popup绑定 </label>
        </div>
        <div class="checkbox checkbox-primary checkbox-inline">
          <input id="chkTooltip" class="styled" type="checkbox" />
          <label for="chkTooltip"> Tooltip绑定 </label>
        </div>
        <div class="checkbox checkbox-primary checkbox-inline">
          <input id="chkContextMenu" class="styled" type="checkbox" checked />
          <label for="chkContextMenu"> 右键菜单绑定 </label>
        </div>
      </div>
      <div>
        数据维护：
        <input id="btnStartDraw" type="button" class="btn btn-primary" value="图上标绘" title="在图上绘制新增一个矢量数据" />

        <div class="checkbox checkbox-primary checkbox-inline">
          <input id="chkHasEdit" class="styled" type="checkbox" />
          <label for="chkHasEdit"> 是否编辑 </label>
        </div>
      </div>
      <div>
        数据管理：
        <input id="btnClear" type="button" class="btn btn-danger" value="清除" />
        <input id="btnExpFile" type="button" class="btn btn-primary" value="保存GeoJSON" title="保存为GeoJSON文件" />
        <input id="btnImpFile" type="button" class="btn btn-primary" value="打开GeoJSON" title="打开之前保存的GeoJSON文件" />

        <input id="input_draw_file" type="file" accept=".json,.geojson" style="display: none" />
      </div>
    </div>

    <!-- 切换视角到模型或地形（山区）的快捷按钮 -->
    <script type="text/javascript" src="js/center_terrain_3dtiles.js"></script>

    <!-- 图层管理相关处理js -->
    <script type="text/javascript" src="./js/graphicManager.js"></script>

    <script src="./js/common.js"></script>
    <script type="text/javascript">
      "use script"; //开发环境建议开启严格模式

      var map;

      function initMap(options) {
        //合并属性参数，可覆盖config.json中的对应配置
        var mapOptions = mars3d.Util.merge(options, {
          scene: {
            fxaa: true,
            center: { lat: 30.851105, lng: 116.352067, alt: 1116, heading: 349, pitch: -27 },
          },
        });

        //创建三维地球场景
        map = new mars3d.Map("mars3dContainer", mapOptions);

        //固定光照，避免gltf模型随时间存在亮度不一致。
        map.fixedLight = true;

        //创建矢量数据图层
        var graphicLayer = new mars3d.layer.GraphicLayer();
        map.addLayer(graphicLayer);

        //图层管理的相关处理，代码在\js\graphicManager.js
        initLayerManager(graphicLayer);

        $("#btnStartDraw").click(function () {
          graphicLayer.startDraw({
            type: "model",
            style: {
              scale: 10,
              url: "//data.mars3d.cn/gltf/mars/firedrill/xiaofangche.gltf",
              label: {
                //不需要文字时，去掉label配置即可
                text: "可以同时支持文字",
                font_size: 20,
                color: "#ffffff",
                outline: true,
                outlineColor: "#000000",
                pixelOffsetY: -20,
              },
            },
          });
        });

        //加一些演示数据
        addGraphic_01(graphicLayer);
        addGraphic_02(graphicLayer);
        addGraphic_03(graphicLayer);
        addGraphic_04(graphicLayer);
      }

      function addGraphic_01(graphicLayer) {
        var graphic = new mars3d.graphic.ModelEntity({
          name: "消防员",
          position: [116.346929, 30.861947, 401.34],
          style: {
            url: "//data.mars3d.cn/gltf/mars/firedrill/xiaofangyuan-run.gltf",
            scale: 20,
            minimumPixelSize: 50,
            heading: 90,

            distanceDisplayCondition: true,
            distanceDisplayCondition_near: 0,
            distanceDisplayCondition_far: 10000,
            distanceDisplayPoint: {
              //当视角距离超过 10000米(distanceDisplayCondition_far定义的) 后显示为点对象的样式
              color: "#00ff00",
              pixelSize: 8,
            },

            label: {
              text: "我是原始的",
              font_size: 18,
              color: "#ffffff",
              pixelOffsetY: -50,
              distanceDisplayCondition: true,
              distanceDisplayCondition_far: 10000,
              distanceDisplayCondition_near: 0,
            },
          },
        });
        graphicLayer.addGraphic(graphic);

        //演示个性化处理graphic，代码在\js\graphicManager.js
        initGraphicManager(graphic);

        //graphic转geojson
        var geojson = graphic.toGeoJSON();
        console.log("转换后的geojson", geojson);
        addGeoJson(geojson, graphicLayer);
      }

      //添加单个geojson为graphic，多个直接用graphicLayer.loadGeoJSON
      function addGeoJson(geojson, graphicLayer) {
        var graphicCopy = mars3d.Util.geoJsonToGraphics(geojson)[0];
        delete graphicCopy.attr;
        //新的坐标
        graphicCopy.position = [116.348587, 30.859472, 373.8];
        graphicCopy.style.label = graphicCopy.style.label || {};
        graphicCopy.style.label.text = "我是转换后生成的";
        graphicLayer.addGraphic(graphicCopy);
      }

      function addGraphic_02(graphicLayer) {
        var graphic = new mars3d.graphic.ModelEntity({
          name: "风机",
          position: [116.35104, 30.86225, 374.4],
          style: {
            url: "//data.mars3d.cn/gltf/mars/fengche.gltf",
            heading: 270,
            scale: 30,
            minimumPixelSize: 100,
            silhouette: false,

            distanceDisplayCondition: true,
            distanceDisplayCondition_near: 0,
            distanceDisplayCondition_far: 9000,
            distanceDisplayBillboard: {
              //当视角距离超过 9000米(distanceDisplayCondition_far定义的) 后显示为图标对象的样式
              image: "img/marker/303.png",
              scale: 1,
            },

            //高亮时的样式（默认为鼠标移入，也可以指定type:'click'单击高亮），构造后也可以openHighlight、closeHighlight方法来手动调用
            highlight: {
              silhouette: true,
              silhouetteColor: "#00ffff",
              silhouetteSize: 3,
            },
          },
        });
        graphicLayer.addGraphic(graphic);
      }

      function addGraphic_03(graphicLayer) {
        var graphic = new mars3d.graphic.ModelEntity({
          name: "汽车",
          position: [116.349194, 30.864603, 376.58],
          style: {
            url: "//data.mars3d.cn/gltf/mars/qiche.gltf",
            scale: 0.5,
            minimumPixelSize: 50,
            silhouette: false,

            //高亮时的样式（默认为鼠标移入，也可以指定type:'click'单击高亮），构造后也可以openHighlight、closeHighlight方法来手动调用
            highlight: {
              silhouette: true,
              silhouetteColor: "#ff0000",
              silhouetteSize: 4,
            },
          },
        });
        graphicLayer.addGraphic(graphic);
      }

      function addGraphic_04(graphicLayer) {
        let propertyFJ = getSampledPositionProperty([
          [116.341348, 30.875522, 500],
          [116.341432, 30.871815, 500],
          [116.347965, 30.866654, 500],
          [116.352154, 30.855531, 500],
          [116.341181, 30.85326, 500],
          [116.334609, 30.856601, 500],
          [116.337695, 30.866505, 500],
          [116.345018, 30.870448, 500],
          [116.345028, 30.870436, 500],
        ]);

        //飞机
        var graphicModel = new mars3d.graphic.ModelEntity({
          position: propertyFJ,
          orientation: new Cesium.VelocityOrientationProperty(propertyFJ),
          style: {
            url: "//data.mars3d.cn/gltf/mars/wrj.glb",
            scale: 0.1,
            minimumPixelSize: 20,
          },
        });
        graphicLayer.addGraphic(graphicModel);
      }

      //计算演示的SampledPositionProperty轨迹
      function getSampledPositionProperty(points) {
        let property = new Cesium.SampledPositionProperty();

        let start = map.clock.currentTime;
        let positions = mars3d.LatLngArray.toCartesians(points);
        for (let i = 0; i < positions.length; i++) {
          let time = Cesium.JulianDate.addSeconds(start, i * 20, new Cesium.JulianDate());
          let position = positions[i];
          property.addSample(time, position);
        }
        return property;
      }
    </script>
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